Description
Maintainer's notes
- We hope Display help for all subcommands at the same time #1334 will provide a way to resolve this. This is being left open to ensure this use case isn't lost in case a minimum or full solution doesn't include this
Rust Version
rustc 1.31.0-nightly (4bd4e4130 2018-10-25)
Affected Version of clap
2.32.0
Bug or Feature Request Summary
Passing the --version flag after one or more subcommands should not append the subcommand names to the process name
Expected Behavior Summary
$ ./target/debug/clap-test --version
claptest 1.0
$ ./target/debug/clap-test test --version
claptest 1.0
$ ./target/debug/clap-test test hello --version
claptest 1.0
Actual Behavior Summary
$ ./target/debug/clap-test --version
claptest 1.0
$ ./target/debug/clap-test test --version
clap-test-test
$ ./target/debug/clap-test test hello --version
clap-test-test-hello
Sample Code or Link to Sample Code
extern crate clap;
use clap::{Arg, App, SubCommand};
fn main() {
let matches = App::new("claptest")
.version("1.0")
.arg(Arg::with_name("config")
.short("c")
.long("config")
.value_name("FILE")
.help("Sets a custom config file")
.takes_value(true))
.subcommand(SubCommand::with_name("test")
.help("print debug information verbosely")
.subcommand(SubCommand::with_name("hello")
.help("hello")))
.get_matches();
}Debug output
Compile clap with cargo features "debug" such as:
[dependencies]
clap = { version = "2", features = ["debug"] }Output for: ./target/debug/clap-test test --version:
Debug Output
DEBUG:clap:Parser::add_subcommand: term_w=None, name=hello
DEBUG:clap:Parser::add_subcommand: term_w=None, name=test
DEBUG:clap:Parser::propagate_settings: self=claptest, g_settings=AppFlags(
(empty)
)
DEBUG:clap:Parser::propagate_settings: sc=test, settings=AppFlags(
NEEDS_LONG_HELP | NEEDS_LONG_VERSION | NEEDS_SC_HELP | UTF8_NONE | COLOR_AUTO
), g_settings=AppFlags(
(empty)
)
DEBUG:clap:Parser::propagate_settings: self=test, g_settings=AppFlags(
(empty)
)
DEBUG:clap:Parser::propagate_settings: sc=hello, settings=AppFlags(
NEEDS_LONG_HELP | NEEDS_LONG_VERSION | NEEDS_SC_HELP | UTF8_NONE | COLOR_AUTO
), g_settings=AppFlags(
(empty)
)
DEBUG:clap:Parser::propagate_settings: self=hello, g_settings=AppFlags(
(empty)
)
DEBUG:clap:Parser::get_matches_with;
DEBUG:clap:Parser::create_help_and_version;
DEBUG:clap:Parser::create_help_and_version: Building --help
DEBUG:clap:Parser::create_help_and_version: Building --version
DEBUG:clap:Parser::create_help_and_version: Building help
DEBUG:clap:Parser::get_matches_with: Begin parsing '"test"' ([116, 101, 115, 116])
DEBUG:clap:Parser::is_new_arg:"test":NotFound
DEBUG:clap:Parser::is_new_arg: arg_allows_tac=false
DEBUG:clap:Parser::is_new_arg: probably value
DEBUG:clap:Parser::is_new_arg: starts_new_arg=false
DEBUG:clap:Parser::possible_subcommand: arg="test"
DEBUG:clap:Parser::get_matches_with: possible_sc=true, sc=Some("test")
DEBUG:clap:Parser::parse_subcommand;
DEBUG:clap:usage::get_required_usage_from: reqs=[], extra=None
DEBUG:clap:usage::get_required_usage_from: after init desc_reqs=[]
DEBUG:clap:usage::get_required_usage_from: no more children
DEBUG:clap:usage::get_required_usage_from: final desc_reqs=[]
DEBUG:clap:usage::get_required_usage_from: args_in_groups=[]
DEBUG:clap:Parser::parse_subcommand: About to parse sc=test
DEBUG:clap:Parser::parse_subcommand: sc settings=AppFlags(
NEEDS_LONG_HELP | NEEDS_LONG_VERSION | NEEDS_SC_HELP | UTF8_NONE | COLOR_AUTO
)
DEBUG:clap:Parser::get_matches_with;
DEBUG:clap:Parser::create_help_and_version;
DEBUG:clap:Parser::create_help_and_version: Building --help
DEBUG:clap:Parser::create_help_and_version: Building --version
DEBUG:clap:Parser::create_help_and_version: Building help
DEBUG:clap:Parser::get_matches_with: Begin parsing '"--version"' ([45, 45, 118, 101, 114, 115, 105, 111, 110])
DEBUG:clap:Parser::is_new_arg:"--version":NotFound
DEBUG:clap:Parser::is_new_arg: arg_allows_tac=false
DEBUG:clap:Parser::is_new_arg: -- found
DEBUG:clap:Parser::is_new_arg: starts_new_arg=true
DEBUG:clap:Parser::possible_subcommand: arg="--version"
DEBUG:clap:Parser::get_matches_with: possible_sc=false, sc=None
DEBUG:clap:ArgMatcher::process_arg_overrides:None;
DEBUG:clap:Parser::parse_long_arg;
DEBUG:clap:Parser::parse_long_arg: Does it contain '='...No
DEBUG:clap:Parser::parse_long_arg: Found valid flag '--version'
DEBUG:clap:Parser::check_for_help_and_version_str;
DEBUG:clap:Parser::check_for_help_and_version_str: Checking if --version is help or version...Version
DEBUG:clap:Parser::_version:
clap-test-test
this does not look like a critical bug, but it still feels weird :)